Nigel Adkins admits Southampton experienced how 'ruthless' the Premier League can be during a disappointing 2-0 defeat by Wigan.
The Saints entered their first home game since returning to the top flight in buoyant mood following an impressive showing against reigning champions Manchester City on the opening weekend.
They were, however, unable to replicate that level of performance in front of their own supporters, despite starting brightly.
Wigan made the hosts pay for their failure to take full advantage of the spells in which they were on top, with goals from Franco Di Santo and Arouna Kone seeing them to a welcome win on the road.
"We were after the three points today," said Adkins. "Obviously we started brightly, we've had some good opportunities.
"The goalkeeper has made some good saves. We've hit the bar on a couple of occasions.
"I think it just highlights how ruthless the Barclays Premier League is.
"Wigan haven't really had that many opportunities but they've gone and scored.
"The first goal has gone and changed the complexion of the game and obviously as we're endeavouring to get a goal back I changed the formation to one we were very good at last year.
"But it just highlights that the 4-4-2 allowed Wigan a spell of 10 minutes when they had far too much possession of the football.
"There were a lot of positives to take from it in terms of the opportunities we did create, but ultimately we were looking for the three points today."